Customers most agreed on the following attributes:
Both of my camera bodies have the E1! The strap is very comfortable and I love the fact that I don't need to have a strap over my shoulder!
Provides a firm grip for the Rebel XTi which is small for my hand even with the motor drive grip. Helps keep the camera in your hands. I feel more comfortable shooting over water or in high places.
I have this strap on 3 different cameras. I bought my first one to keep the camera secure when not using a neck strap. What I found out is that it's even better at taking the load off your hand during a prolonged walk. You don't have to grip the camera much, so your hand can relax. With your palm pointed down the strap rests on the back of your hand. I find the wrist/arm muscles that support the camera this way don't tire as easily as the hand/wrist muscles that support the camera without the strap. Good for taking a load off during a walk-around. The strap does take some effort to install the first time you do it. For non-pro camera bodies, the instructions are found with the battery grip instructions and are not included in the hand strap packaging.
Positive
Gives me a secure grip on my Canon cameras under varying conditions. Would not be without this strap.
A great comfortable feel in use with the battery griip on my 20D. I feel strange without it.
This is another great accessory by Canon. Perfect for any EOS camera with battery grip. I use a 20D with the vertical battery grip. THIS PRODUCT WORKS GREAT!!!